Stop motion attachment for looms



May 16, 1944.

J. F. KOSKELA 2,348,824

STOP MOTION ATTACHMENT FOR LOOMS Filed April 16, 1943 2 Sheets-Sheet 1 J Inventor y 6 1944. 1 J. F. KOVSKELA 2,348,824

STOP MOTION ATTACHMENT FOR LOOMS Filed April 16, 1943 2 Sheets-Sheet 2 am ska/p KNGCK- OF Inventor foams F/foskeZa/ WEMM Patented May 16, 1944 UNITED STATES PATENT OFFICE STOP MOTION ATTACHlVIENT FOR LOOMS Jonas F. Koskela, Maynard, Mass. Application April 16, 1943, Serial No. 483,317 I (01. 139-337) Claims.

This invention relates to a novel contrivance, preferably in the form of an attachment, for looms, and the main purpose of the invention is to provide useful and reliable means for stopping a loom when a harness wire breaks.

More specifically, I haveevolved and produced what is believed to'be a simple and ingenious device which is up to the minute in design and efiiciency, the same being expressly constructed so that it may be expeditiously attached to the top of a loom so that if a harness strap breaks as it travels through the loom, it pulls down a wire, thus closing an electrical circuit and stopping the loom.

A- further object is the provision of a simple and economical attachment characterized by a wooden base member which is easily adaptable to occupy the desired position between conventional parallel bars of the 100m frame, said base member being provided with a single slanting wire rod or equivalent member properly inclined to accommodate the slant of the harness wires.

In reducing to practice the preferred embodiment of the invention, I have conceived an arrangement of carefully chosen parts coordinated to provide a mechanically superior, compact and convenient, and simple and reliable structure achieving the desired results with certainty and efllciency, the wire member, carried by the wooden adapter, having a hook at its point of low elevation so that the harness wireswill not slide off when a wire gets loose from the strap.

More specifically stated, the contrivance is considered unique in that it is characterized by a simple notched wooden adapter susceptible of being swung and wedged readily in place, this serving as an insulator and a mount for the wire rod carried thereby, the latter being designed at one end to accommodate a simple spring clip on one end of a current conductor wire, the other end of which is adapted to be connected with the Crompton and Knowles drop wire bar, a conventional part of the type of loom on which my attachment is used. I

Other features and advantages of the invention will become more readily apparent from the following description and the accompanying drawings.

In the drawings, wherein like numerals are employed to designate like parts throughout the views:

Figure 1 is an elevational view showing parts of a conventional loom just suificient to illustrate the harness and wires, jack means and the attachment in place, with the extra conductor'wlre necessary to render said attachment operable as a stop motion appliance.

Figure 2 is an enlarged detail view on the plane of the line 2-2 of Figure 1, looking in the direction of the arrows.

Figure 3 is a top plan view showing parallel bars of a loom frame with the attachment thereon, the harness wires and other features being removed for clearness of illustration, and there being shown, somewhat diagrammatically, the clip equipped conductor, drop pin bar and other associated parts of a conventional stop motion control.

Figure 4 is a perspective view of the attachment per se, this being the means broadly and specifically claimed.

Reference being had to the drawings, and particularly Figure 4 thereof, this shows the complete contrivance or attachment. It is unitarily referred to by the numeral 5. It comprises an elongated Wooden bar 6 having V-shaped notches l at opposite ends, which notches engage, the top flanges of the parallel bars A of the loom B, as brought out to advantage in Figures 2 and 3. In practice this part serves as an insulator and is varied in length to fit different sized machines. It is evident that by placing the wooden bar 6 between the bars A somewhat diagonally, and then swinging the notched ends in arcuate paths, said notched ends readily engage the bars A and hold the attachment 5 rigidly in place. There is a single, simple wire rod carried by the upper edge of the wooden bar. This is of a predetermined length and one end 8 is bent perpendicularly with its free end fitting down into a socket 9 in the wooden bar. The main or intermediate portion l0 slants downwardly toward the opposite end of the wooden bar and passes through an anchoring eye H and terminates in an upstanding safety or retention hook l2 which functions in a manner to be hereinafter described. The harness wires (see Fig. 1), atop the loom frame, are dethe stop control Wire H is connected. In prac tice I have found it expedient and practicable to utilize a conductor l3, this having a clip M which fastens to the part 8 at one end, the op- 'is of steel, is grounded to the loom frame.

posite end being connected to the drop pin bar, as indicated at I5 (Fig. 3)

For clearness of understanding of the operation, I have shown the drop wire bar ground at I, the solenoid J in the standard knock-off box (not shown), grounded battery and switch. It is understood that these parts are merely shown to disclose how the attachment 5 and the conductor 13 fit into the picture for complete ness of operation.

It is believed that the drawings, since the invention consists of an improvement on an old machine, exhibit, in one view, the invention itself, disconnected from the machine, and in other views so much only of the old structure as will suffice to show the connection of the invention therewith. It seems unnecesary to disclose other than that illustrated in the drawings, since the novelty is in the device in Figure 4 per se and in combination with the old structure.

The wooden part 6 on which the wire member is mounted can be of any length and form. It is a base or adapter to accommodate the hooked wire member.

The frame on some looms varies in width, and so it has been decided to put a hook on the end of the wire member and to raise the other end of the wire from the wood about two inches, more or less, to accommodate the slant of the harness wires. On some looms the wire will be raised-more than two inches, and on some less than two inches. It is adjustable for thi purpose. As stated, the hook I2 on the free end of the wire is made so that the harness wires will not slide off when the harness Wire gets loose from the strap. When the harness strap breaks, wires get loose and slide off of the contrivance, that is, if it were not for the ever-important safety hook I2. The hook end is on the front of the loom and the opposite elevated end 8 is on the back of the loom.

The attachment may be used singly or in pairs, as desired. As before indicated, the attachment i located on the top of the loom away from dust and lint, and ms but a single, simple slanting wire to accomplish the desired purpose; Further, if the harness strap breaks, as it travels through the loom, pulls down a wire C onto the electrified rod it, thus closing the normally open circuit and stopping the loom.

As previously stated, variou Ways and means may be employed to eleotrify the wire rod [0 so that when one of the overhead wires C drops thereon, a circuit is closed, that is, the circuit which includes the illustrated or an equivalent warp stop motion. It is perhaps desirable, how

l0 and then to the core of the drop wire bar, the attachment 5 then becomes a part of the circuit closing system.

It is thought that persons skilled in the art to which the invention relates will be able to obtain a clear understanding of the invention after considering the description in connection with the drawings. Therefore, a more lengthy description is regarded as unnecessary.

- Minor changes in shape, size and rearrangement of details coming within the field of invention claimed may be resorted to in actual practice, if desired.

H I claim:

1. A short circuiting harness strap contrivance of the class described comprising an adapter for connection with a conventional loom frame, an inclined wire rod on said adapter, a clip for connection with said rod, and a conductor carried by said clip and adapted for connection with a drop pin bar.

2. A loom attachment of the class described comprising an adapter, a wire rod having a downturned end adjustably connected with said adapter, and an inclining portion extending from said downturned end toward and anchoredon the remote end of the adapter.

: 3. A loom attachment of the class described comprising an adapter, a wire rod having a downturned end adjustably connected with said adapter, and an inclining portion extending from said downturned end toward and anchored on the remote end of the adapter and terminating V in an upstanding retention hook.

ever, to explain that the so-called wiring dia-- gram in Figure 3 embodies conventional parts of a well known C and K electric warp stop motion. The aforementioned drop wire bar consists of two members, insulated electrically from one another. The outer sheath member, which The center or core member, which extends beyond one end thereof and to which the wir I3 is shown connected is also electricaily connected with corresponding core members in a complete bank (not shown) of drop wire bars. In this arrangement when the hairpin-like drop wire (not shown) has fallen and has acted as a switch to close the electrical circuits, the solenoid J in the'knock-ofi box (notshown) automatically is energized and comes into play, stopping the loom in a conventional manner. Thus, by simply joinmg the conductor l3, by the clip id, to the. rod 15 4. An attachment of the class described comprising an adapter, a single wire rod extending longitudinally atop the same, said wire rod member being in a slanting position and havinglat erally directed end portions.

5. An attachment of the class described comprising an adapter, a single wire rod extending longitudinally atop the same, said wire rod being in a slanting position and having laterally directed end portions, one end portion being directed downwardly and anchored in the adapter, the opposite end portion being directed upwardly to serve as a safety finger in the manner and for the purposes described.

6. An attachment of the class described com prising an adapter, a longitudinally elongated wire rod, said rod inclining in relation to the adapter having one and fastened on the adapter,

the opposite end being laterally bent and fitting adjustably in a socket formed in said adapter.

7. An attachment of the class described comprising a longitudinally elongated wooden bar adapted to be removably mounted between parallel frame bars of a loom, said bar member having V-shaped notches to facilitate application and maintenance in place, and a single wire member thereon adapted for disposition beneath harness wires in the manner and for the purposes described.

8. An ever set ready to function loom stopping attachment of the type shown and described comprising an adapter for connection with a conventionai loom frame, an inclined wire carried by said adapter, and a current conducting element connected to said wire in the mannerand for the purposes specified.

9. An automatically operable loom stopping attachment comprising an inclined wire element adapted to underlie a bank of inclinedharness wires, adapter means for supporti'ng'and an.-

choring said wire element on a predetermined part of a conventional loom frame, and a current conductor electrically connected to said wire element and adapted to be connected to a suitable part of the loom stop mechanism.

10. An automatically operable loom stopping attachment of the class described comprising an elongated adapter member designed to be removably and adjustably supported in a position between frame bars of a conventional loom 10 frame, said adapter member being intended to occupy a position underlying an overhead bank of inclined harness wires, and a single current conducting wire member mounted on said adapter member and adapted for trapping and temporarily retaining either broken or slack harness wires in the manner and for the purposes described.

JONAS F. KOSKELA. 

